Caracterização de fungos cultiváveis em bioaerossóis marinhos no Atlântico Equatorial

Abstract

In the marine environment there is a great diversity in the bioaerosol mycobiota, these microorganisms, which are important for several biogeochemical processes are susceptible to several environmental variables that can cause occurrence and dispersion. These microorganisms are important for several biogeochemical processes. In this way, the present work aimed to evaluate the diversity and abundance of cultivable fungi suspended in the air along the Equatorial Atlantic Ocean, also analyzing the regularity of oceanographic and meteorological variables under the composition of the marine bioaerosol mycobiota. For this purpose, 5 bioaerosol samplings were carried out using the plate sedimentation technique, along the Equatorial Atlantic Ocean in expeditions of the PIRATA project. The collection points were located around meteoceanographic buoys. The prey was stored and transported to the Laboratory of Environmental and Fish Microbiology, located at the Institute of Marine Sciences (LABOMAR), of the Federal University of Ceará for processing. With that, 19 fungal colonies were illuminated and characterized. The analyzes surveyed 9 distinct fungal genera, especially Fonsecaea and Aspergillus. Other genera such as: Acrophialophora, Chrysosporium, Cladosporium, Mucor, Rhodotorula, Schizophyllum and Stemphylium were also found. Meteoceanographic parameters, such as air temperature and humidity and wind speed, may be related to changes in the composition of mycobiota in aerosols over the Equatorial Atlantic Ocean. As well as the presence, circulation and anthropogenic impacts, they can also be associated with influence and changes in the abundances and compositions of microorganisms.